Documents needed when entering in France

Whether or not you are required to obtain a visa before travelling, even if you are an American citizen, you may be requested to show the following elements to the French immigration officers upon arrival:

a valid passport, issued less than 10 years ago and still valid 3 months after your expected return from France,

a return plane ticket (for a short stay only),

means of support during the stay (cash, credit cards, traveler cheques),